add rowGap configuration

src/components/digitalFlop/src/main.vue

@@ -53,6 +53,12 @@ export default {
          * @example textAlign = 'center' | 'left' | 'right'
          */
         textAlign: 'center',
+        /**
+         * @description rowGap
+         * @type {Number}
+         @default rowGap = 0
+         */
+        rowGap: 0,
         /**
          * @description Text style configuration
          * @type {Object} {CRender Class Style}
@@ -124,7 +130,7 @@ export default {
       })
     },
     getShape () {
-      const { number, content, toFixed, textAlign } = this.mergedConfig
+      const { number, content, toFixed, textAlign, rowGap } = this.mergedConfig
 
       const [w, h] = this.renderer.area
 
@@ -137,7 +143,8 @@ export default {
         number,
         content,
         toFixed,
-        position
+        position,
+        rowGap
       }
     },
     getStyle () {